Answer:
The answer is option B, that is, it has two oxygen atoms.
Adult Bone Marrow has stem cells that are not as "good" as embryonic ones but they still can become red blood and skin cells
Mined salt has sharp edges v s sea salt with rounded edged
The reaction is a hydrogenation reaction of an alkene, and its equation is:
C₂H₄(g) + H₂(g) → C₂H₆(g)
Therefore, this reaction can be sped up just as any other irreversible reaction may have its rate increased, by increasing temperature and pressure to increase the effective collisions of molecules.
